Efficient removal of arsenic from water using a granular adsorbent: Fe–Mn binary oxide impregnated chitosan bead

Qi, Jianying; Zhang, Gaosheng; Li, Haining

doi:10.1016/j.biortech.2015.06.102

Cited by 152 publications

(46 citation statements)

References 34 publications

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“…Many excellent researchers have focused on the removal of arsenic by Fe–Mn oxides (Bai, Yang, Liang, & Qu, ; Qi, Zhang, & Li, ; Zhang, Liu, Liu, Qu, & Liu, ; Zhang et al., , ). Bai et al.…”

Section: Resultsmentioning

confidence: 99%

Arsenite removal from groundwater by iron–manganese oxides filter media: Behavior and mechanism

Cheng

Zhang

2019

Water Environment Research

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Arsenic, a common contaminant in groundwater environments, usually coexists with other contaminants, for example, ammonium, iron, and manganese. In our previous studies, an iron-manganese (Fe-Mn) oxides filter media was developed for catalytic oxidation removal of ammonium, iron, and manganese. In this study, batch oxidation/ adsorption kinetic experiments revealed that the filter media could easily oxidize arsenite (As(III)) to arsenate (As(V)). And the sorption kinetics was found to follow the pseudo-second-order kinetic model. X-ray powder diffraction (XRD) and Fourier transform infrared spectra (FTIR) along with X-ray photoelectron spectroscopy (XPS) were used to analyze the surface change in the Fe-Mn oxides. Based on sorption and spectroscopic measurements, the mechanism of As(III) removal by the Fe-Mn oxides filter media was found to be an oxidation coupled with sorption approach. As(III) in the aqueous solution was firstly oxidized to As(V) on the surfaces of the Fe-Mn oxides filter media. Then the converted As(V) was attracted to the Fe-Mn oxides filter media surfaces and bounded with the active sites (−OH groups), through weak intermolecular H-bondings. Our results indicated that the novel Fe-Mn oxides filter media could be applied for the simultaneous removal of ammonium, iron, manganese, and As(III) in drinking water treatment and environmental remediation. • Practitioner points• A novel iron-manganese oxides filter for efficient As(III) removal was established. • The exhausted filter media could be easily regenerated by NaHCO 3 solution.• Mn(III) related to surface lattice oxygen species was responsible for As(III) oxidation. • The oxidation and adsorption processes were involved in As(III) removal. • The filter media could be successfully applied to simultaneous removal of ammonium, manganese, iron, and arsenic.

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Section: Resultsmentioning

confidence: 99%

Arsenite removal from groundwater by iron–manganese oxides filter media: Behavior and mechanism

Cheng

Zhang

2019

Water Environment Research

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“…The first linear section exhibited one steep slope refereeing to the rate controlling as the pore diffusion, and the second linear portion was a relatively moderate sorption stage, which indicates the intra-particle diffusion controlling in the pore structure. Finally, the last linear section for slow sorption stage was relating to the stereo-hindrance effect derived from the adsorbed species42.…”

Section: Resultsmentioning

confidence: 99%

Functionalized chitosan electrospun nanofiber for effective removal of trace arsenate from water

Liu

Zhong

Zheng

et al. 2016

Sci Rep

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An environment-friendly iron functionalized chitosan elctrospun nanofiber (ICS-ENF) was synthesized for trace arsenate removal from water. The ICS-ENF was fabricated by electrospinning a mixture of chitosan, PEO and Fe3+ followed by crosslinking with ammonia vapor. The physicochemical properties of ICS-ENF were characterized by FESEM, TEM-EDX and XRD. The ICS-ENF was found to be highly effective for As(V) adsorption at neutral pH. The As(V) adsorption occurred rapidly and achieved equilibrium within 100 min, which was well fitted by pseudo-second-order kinetics model. The As(V) adsorption decreased with increased ionic strength, suggesting an outer-sphere complexation of As(V) on ICS-ENF. Freundlich model well described the adsorption isotherm, and the maximum adsorption capacity was up to 11.2 mg/g at pH 7.2. Coexisting anions of chloride and sulfate showed negligible influence on As(V) removal, but phosphate and silicate significantly reduced As(V) adsorption by competing for adsorption sites. FTIR and XPS analysis demonstrated –NH, –OH and C–O were responsible for As(V) uptake. ICS-ENF was easily regenerated using 0.003 M NaOH, and the removal rate remained above 98% after ten successively adsorption-desorption recycles. This study extends the potential applicability of electrospun nanofibers for water purification and provides a promising approach for As(V) removal from water.

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“…The use of Fe-Mn binary oxides may be most promising due to the simplicity and efficiency of both As(III) and As(V) removal [21]. However, studies into the use of binary oxides for As remediation are limited and have concentrated upon application to water using expensive synthetic mineral sources [22][23][24], with a few exceptions that consider waste sources [25,26], and application to soil [27]. At present, there are no studies on the use of Fe-Mn binary oxide by-products to remediate historically As-contaminated soils.…”

Section: Introductionmentioning

confidence: 99%

In situ arsenic oxidation and sorption by a Fe-Mn binary oxide waste in soil

McCann

Peacock

Hudson‐Edwards

et al. 2018

Journal of Hazardous Materials

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In situ arsenic oxidation and sorption by a Fe-Mn binary oxide waste in soil., Journal of Hazardous Materialshttp://dx.doi.org/10. 1016/j.jhazmat.2017.08.066 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. Graphical abstractHighlights  A Fe-Mn binary oxide waste is used to remediate As contaminated soils. As(III) and As(V) adsorption capacities of 70 mg g 1 and 32 mg g 1 were determined. The bioaccessibility of total As was significantly reduced by 7.80 %  Arsenic in the contaminated soil effectively binds to the exogenous binary oxide. As(V) was sorbed by mononuclear bidentate corner-sharing with Fe. AbstractThe ability of a Fe-Mn binary oxide waste to adsorb arsenic (As) in a historically contaminated soil was investigated. Initial laboratory sorption experiments indicated that arsenite [As(III)] was oxidized to arsenate [As(V)] by the Mn oxide component, with concurrent As(V) sorption to the Fe oxide. The binary oxide waste had As(III) and As(V) adsorption capacities of 70 mg g 1 and 32 mg g 1 respectively. X-ray Absorption Near-Edge Structure and Extended X-ray Absorption Fine Structure at the As K-edge confirmed that all binary oxide waste surface complexes were As(V) sorbed by 3 mononuclear bidentate corner-sharing, with 2 Fe at ~ 3.27 Ǻ The ability of the waste to perform this coupled oxidation-sorption reaction in real soils was investigated with a 10% by weight addition of the waste to an industrially As contaminated soil. Electron probe microanalysis showed As accumulation onto the Fe oxide component of the binary oxide waste, which had no As innately. The bioaccessibility of As was also significantly reduced by 7.80 % (p < 0.01) with binary oxide waste addition. The results indicate that Fe-Mn binary oxide wastes could provide a potential in situ remediation strategy for As and Pb immobilization in contaminated soils.

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Efficient removal of arsenic from water using a granular adsorbent: Fe–Mn binary oxide impregnated chitosan bead

Cited by 152 publications

References 34 publications

Arsenite removal from groundwater by iron–manganese oxides filter media: Behavior and mechanism

Arsenite removal from groundwater by iron–manganese oxides filter media: Behavior and mechanism

Functionalized chitosan electrospun nanofiber for effective removal of trace arsenate from water

In situ arsenic oxidation and sorption by a Fe-Mn binary oxide waste in soil

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